我是这样制作按钮组听众，但是当点击按钮时，应用程序强制关闭，我不知道我的代码有什么问题所以请检查出来
这是我的应用项目的完整代码
公共类菜单扩展了Activity {
static String KEY_ANIM = "TARGET_ANIM";
static String Target_Move = "Move";
static String Target_Alpha = "Alpha";
String target_op = Target_Move;
Button button1, button2, button3, button4, button5, button6, button7, button8, button9, button10, button11, button12;
Animation animFadein, animFadeout, animFadeout1, animFadeout2, animFadeout3;
OnClickListener listener1, listener2, listener3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.menu);
animFadeout = AnimationUtils.loadAnimation(this, R.animator.fadeout);
animFadeout1 = AnimationUtils.loadAnimation(this, R.animator.fadeout);
animFadeout2 = AnimationUtils.loadAnimation(this, R.animator.fadeout);
animFadeout3 = AnimationUtils.loadAnimation(this, R.animator.fadeout);
animFadein = AnimationUtils.loadAnimation(this, R.animator.fadein);
button1= (Button)findViewById(R.id.aa1);
button2= (Button)findViewById(R.id.aa2);
button3= (Button)findViewById(R.id.aa3);
button4= (Button)findViewById(R.id.aa4);
button5= (Button)findViewById(R.id.aa5);
button6= (Button)findViewById(R.id.aa6);
button7= (Button)findViewById(R.id.aa7);
button8=(Button)findViewById(R.id.aa8);
button9= (Button)findViewById(R.id.aa9);
button10= (Button)findViewById(R.id.aa10);
button11= (Button)findViewById(R.id.aa11);
button12= (Button)findViewById(R.id.aa12);
listener1 = new OnClickListener() {
@Override
public void onClick(View one) {
target_op = Target_Alpha;
if(one==button1|| one==button2|| one==button3|| one==button4){
((View) listener1).startAnimation(animFadeout1);
}
}
};
button1.setOnClickListener(listener1);
button2.setOnClickListener(listener1);
button3.setOnClickListener(listener1);
button4.setOnClickListener(listener1);
listener2 = new OnClickListener() {
@Override
public void onClick(View two) {
target_op = Target_Alpha;
((View) listener2).startAnimation(animFadeout);
if(two==button5|| two==button6|| two==button7|| two==button8){
Intent intent = new Intent( Amenu.this, bachievements.class);
intent.putExtra(KEY_ANIM, target_op);
startActivity(intent);
}
}
};
button5.setOnClickListener(listener2);
button6.setOnClickListener(listener2);
button7.setOnClickListener(listener2);
button8.setOnClickListener(listener2);
listener3 = new OnClickListener() {
@Override
public void onClick(View three) {
target_op = Target_Alpha;
((View) listener3).startAnimation(animFadeout);
if(three==button9|| three==button10|| three==button11|| three==button12){
}
}
};
button9.setOnClickListener(listener2);
button10.setOnClickListener(listener2);
button11.setOnClickListener(listener2);
button12.setOnClickListener(listener2);
animFadeout1.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationEnd(Animation animation) {
// TODO Auto-generated method stub
((View) listener2).startAnimation(animFadeout2);
}
});
animFadeout2.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationEnd(Animation animation) {
// TODO Auto-generated method stub
((View) listener2).startAnimation(animFadeout3);
}
});
animFadeout3.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationEnd(Animation animation) {
// TODO Auto-generated method stub
Intent intent = new Intent( menu.this, play.class);
intent.putExtra(KEY_ANIM, target_op);
startActivity(intent);
menu.this.finish();
}
});
我把动画放在那里所以当listener1按钮组点击它会显示fadeout动画，当listener1动画结束然后listener2动画节目等等到listener3
这是来自logcat
10-31 22:53:57.375: E/AndroidRuntime(642): FATAL EXCEPTION: main
10-31 22:53:57.375: E/AndroidRuntime(642): java.lang.ClassCastException: com.mira.canyoutapit.Amenu$2 cannot be cast to android.view.View
10-31 22:53:57.375: E/AndroidRuntime(642): at com.mira.canyoutapit.Amenu$2.onClick(Amenu.java:93)
10-31 22:53:57.375: E/AndroidRuntime(642): at android.view.View.performClick(View.java:4084)
10-31 22:53:57.375: E/AndroidRuntime(642): at android.view.View$PerformClick.run(View.java:16966)
10-31 22:53:57.375: E/AndroidRuntime(642): at android.os.Handler.handleCallback(Handler.java:615)
10-31 22:53:57.375: E/AndroidRuntime(642): at android.os.Handler.dispatchMessage(Handler.java:92)
10-31 22:53:57.375: E/AndroidRuntime(642): at android.os.Looper.loop(Looper.java:137)
10-31 22:53:57.375: E/AndroidRuntime(642): at android.app.ActivityThread.main(ActivityThread.java:4745)
10-31 22:53:57.375: E/AndroidRuntime(642): at java.lang.reflect.Method.invokeNative(Native Method)
10-31 22:53:57.375: E/AndroidRuntime(642): at java.lang.reflect.Method.invoke(Method.java:511)
10-31 22:53:57.375: E/AndroidRuntime(642): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
10-31 22:53:57.375: E/AndroidRuntime(642): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
10-31 22:53:57.375: E/AndroidRuntime(642): at dalvik.system.NativeStart.main(Native Method)
我很抱歉，如果我的代码出错，因为我在这里要求更正我的代码，在此先感谢
答案 0 :(得分：1)
您正在向onClickListenner投射View并尝试startAnimation，这会导致错误。
应该在视图上调用它：
view.startAnimation(animFadeout1);
您的代码存在其他问题：
由于您使用所有这些按钮，因此更容易制作活动展示位置OnClickListener：
public class menu extends Activity implements View.OnClickListener{...}
所有按钮都使用相同的ID，因此所有按钮的行为都相同。
您需要使用不同的ID，并使它们使用相同的侦听器：
button1= (Button)findViewById(R.id.button_one);
button1.setOnClickListener(this);
button2= (Button)findViewById(R.id.button_two);
button2.setOnClickListener(this);
然后使用开关盒根据按钮ID提供不同的逻辑。
@Override
public void onClick(View view) {
//To identify the correct widget, use the getId() method on the view argument
int id = view.getId();
switch (id) {
case R.id.button_one:
//viewOne clicked
break;
case R.id.button_two:
//And so on...
}
}
您可以使用多个按钮，例如：
case R.id.button_one, R.id.button_two , R.id.button_three, R.id.button_four:
此外，您的动画也是多余的，良好的编码习惯要求您避免重复。